CN112327545B

CN112327545B - Display device

Info

Publication number: CN112327545B
Application number: CN202011292623.2A
Authority: CN
Inventors: 陈鹏; 张新霞; 吕凤珍
Original assignee: BOE Technology Group Co Ltd; Hefei Xinsheng Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Hefei Xinsheng Optoelectronics Technology Co Ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2024-03-26
Anticipated expiration: 2040-11-18
Also published as: CN112327545A; US11714319B2; US20220155646A1

Abstract

The invention provides a display device, and belongs to the technical field of display. The invention provides a display device which comprises a plurality of sub-pixels arranged in an array, an array substrate, a counter substrate and a liquid crystal layer, wherein the array substrate and the counter substrate are oppositely arranged, and the liquid crystal layer is arranged between the array substrate and the counter substrate. The array substrate includes a first base, and a first electrode and a second electrode of each of the plurality of sub-pixels. Wherein the first electrode and the second electrode are arranged on one side of the first substrate close to the liquid crystal layer. The opposite substrate comprises a second base and an interference electrode of each of the plurality of sub-pixels; the interference electrode is arranged on one side of the second substrate close to the liquid crystal layer, and the interference electrode of each sub-pixel is at least partially overlapped with the orthographic projection of the second electrode of each sub-pixel on the substrate.

Description

Display device

Technical Field

The invention belongs to the technical field of display, and particularly relates to a display device.

Background

At present, when a display device is used daily or confidential documents are handled in a conference scene, peep-proof treatment is required to be performed on the display device. In the related art, the same layer is attached to the display area of the display device by using the peep-proof film, so that the peep-proof film can increase the thickness of the display device, and the contrast ratio of the display device can be reduced at each view angle, thereby affecting the display effect.

Disclosure of Invention

The invention aims to at least solve one of the technical problems in the prior art and provide a display device which can realize the peep-proof effect and does not influence the contrast and the thickness of the display device.

The technical scheme adopted for solving the technical problem of the invention is a display device, which comprises a plurality of sub-pixels arranged in an array; wherein the display device includes: an array substrate and a counter substrate disposed opposite to each other, and a liquid crystal layer disposed therebetween;

the array substrate includes: a first substrate, and first and second electrodes of each of the plurality of sub-pixels; wherein the first electrode and the second electrode are arranged on one side of the first substrate close to the liquid crystal layer;

the counter substrate includes: a second substrate, and an interference electrode of each of the plurality of sub-pixels; the interference electrode is arranged on one side of the second substrate close to the liquid crystal layer, and the interference electrode of each sub-pixel is at least partially overlapped with the orthographic projection of the second electrode of each sub-pixel on the substrate.

According to the display device provided by the invention, on the basis that the electric field between the first electrode and the second electrode controls the light transmittance of the whole liquid crystal layer, the electric field between the interference electrode and the second electrode can control the local light transmittance of the liquid crystal layer, so that the liquid crystal molecules between the interference electrode and the second electrode are approximately vertical, and the light transmittance of the display device under a side view angle is effectively reduced to achieve the peep-proof effect; and the interference electrode is arranged on one side of the second substrate close to the array substrate, so that the thickness of the display device is not increased.

In some examples, the first electrode in the subpixel is a plate electrode and the second electrode is a slit electrode; the first electrode and the second electrode are sequentially arranged along the direction deviating from the first substrate; the slit electrode includes a main body portion and an opening portion; wherein,

the front projection of the interference electrode in the sub-pixel on the first substrate is at least partially overlapped with the front projection of the main body part of the slit electrode on the first substrate, and is not overlapped with the front projection of the opening part of the slit electrode on the first substrate.

In some examples, the body portion in each of the sub-pixels includes a plurality of sub-body portions, a first connection portion, and a second connection portion; the plurality of sub-main body parts are arranged at intervals, the first ends of the plurality of sub-main body parts are connected through the first connecting part, and the second ends of the plurality of sub-main body parts are connected through the second connecting part;

the interference electrode in each of the sub-pixels includes a plurality of sub-interference electrodes; wherein,

the sub-interference electrodes are arranged in one-to-one correspondence with the sub-main body parts.

one sub-interference electrode is arranged corresponding to one sub-main body part, and one sub-main body part is arranged between orthographic projections of any two sub-interference electrodes on the first substrate.

the interference electrode in each sub-pixel comprises a sub-interference electrode; wherein,

the sub-interference electrode is provided corresponding to a sub-body portion located in the middle of the plurality of sub-body portions.

In some examples, the orthographic projection of the sub-body portion on the first substrate is located within the orthographic projection of the corresponding sub-interference electrode on the first substrate.

In some examples, the sub-body portion is a strip electrode; the sub-interference electrodes are strip-shaped electrodes, and the extending direction of the sub-main body part is the same as the extending direction of the sub-interference electrodes.

In some examples, at least one support structure is further included, the support structure being disposed in one-to-one correspondence with the sub-interference electrodes, the support structure being located between the sub-interference electrodes and the second substrate.

In some examples, the support structure is integrally formed with the sub-interference electrode.

In some examples, the counter substrate further includes a black matrix disposed between each of the sub-pixels;

the support structure and the black matrix are integrally formed.

In some examples, the first electrode in the subpixel comprises a plurality of sub-first electrodes and the second electrode comprises a plurality of sub-second electrodes; the sub first electrodes and the sub second electrodes are arranged in a staggered manner and are arranged on the same layer; wherein,

the orthographic projection of the interference electrode in the sub-pixel on the first substrate at least partially overlaps with the orthographic projection of the sub-first electrode and/or the sub-second electrode on the first substrate.

Drawings

Fig. 1 is a schematic structural view (top view) of an embodiment of a display device according to the present embodiment;

FIG. 2 is a cross-sectional view (A-B direction) of an embodiment of a display device according to the present embodiment;

FIG. 3 is a cross-sectional view (C-D direction) of an embodiment of a display device according to the present embodiment;

Fig. 4 is a schematic diagram illustrating the deflection of liquid crystal molecules in the display device according to the present embodiment;

fig. 5 is one of sectional views of another embodiment of the display device according to the present embodiment;

FIG. 6 is a second cross-sectional view of another embodiment of a display device according to the present embodiment;

FIG. 7 is a third cross-sectional view of another embodiment of a display device according to the present embodiment;

FIG. 8 is a cross-sectional view of another embodiment of a display device according to the present embodiment (in which the supporting structure and the interference electrode are integrally formed);

FIG. 9 is a fifth cross-sectional view of another embodiment of a display device according to the present embodiment (in which the support structure and the black matrix are integrally formed);

FIG. 10 is a cross-sectional view of another embodiment of a display device according to the present embodiment (in which the first electrode and the second electrode are arranged in the same layer)

FIG. 11 is a graph showing voltage-transmittance of the display device according to the present embodiment;

fig. 12 is a view angle-contrast diagram of the display device according to the present embodiment;

fig. 13 is a parameter test table of the display device according to the present embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The shapes and sizes of the various components in the drawings are not to scale, but are merely intended to facilitate an understanding of the contents of the embodiments of the present invention.

Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a," "an," or "the" and similar terms do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

It should be noted that, in the display device provided in the embodiments of the present disclosure, the array substrate and the opposite substrate form the display device in a box-to-box manner, the array substrate may include multiple types of array substrates, the array substrate includes a driving circuit for multiple sub-pixels, and if the array substrate is a color film integrated substrate (Color Filter on Array, COA) substrate, the array substrate may further include a color filter. If the array substrate includes a driving circuit and does not include a color filter, the counter substrate may be a color film substrate, and if the array substrate is a COA substrate, the counter substrate may be a package substrate, and the array substrate includes a driving circuit and the counter substrate is a color film substrate.

It should be noted that, in the display device provided in the embodiments of the present disclosure, the electric field between the first electrode and the second electrode can control the deflection angle of the liquid crystal molecules of the liquid crystal layer so as to adjust the transmittance of the liquid crystal layer to display, and the arrangement manner of the first electrode and the second electrode and the positional relationship between the two may have multiple manners, that is, the embodiments of the present disclosure may have multiple driving modes, for example, the first electrode may be disposed on the side of the second electrode near the first substrate, the first electrode is a plate-shaped electrode, the second electrode is a slit electrode, the electric field around the first electrode acts with the electric field of the second electrode through the slit, and controls the deflection direction of the liquid crystal molecules located near the slit in the liquid crystal layer in the sub-pixel. For another example, the first electrode may include a plurality of sub-first electrodes, the second electrode may include a plurality of sub-second electrodes, the sub-first electrodes and the sub-second electrodes are staggered and arranged in the same layer, and an electric field formed between the sub-first electrodes and the sub-second electrodes controls a deflection direction of liquid crystal molecules of a liquid crystal layer located in the sub-pixel. One of the first electrode and the second electrode is a pixel electrode, receives a data voltage, the other is a common electrode, receives a common voltage, and the first electrode is a common electrode and the second electrode is a pixel electrode.

As shown in fig. 1-3, wherein fig. 2 is a cross-sectional view taken along the direction a-B of fig. 1, and fig. 3 is a cross-sectional view taken along the direction C-D of fig. 1. The embodiment of the disclosure provides a display device, which comprises a plurality of sub-pixels P arranged in an array. The display device comprises an array substrate 1 and a color film substrate 2 which are oppositely arranged, and a liquid crystal layer 3 and a backlight module (not shown in the figure) which are arranged between the array substrate 1 and the color film substrate 2.

Specifically, the array substrate 1 includes a first base 11, a common electrode layer 12, a plurality of pixel electrodes 13, and further includes a plurality of gate lines 4 and a plurality of data lines 5 and a plurality of thin film transistors 14. The common electrode layer 12, the plurality of pixel electrodes 13, the plurality of gate lines 4, the plurality of data lines 5, and the plurality of thin film transistors 14 are disposed on the first substrate 11, one thin film transistor 14 and one pixel electrode 13 are disposed in each sub-pixel P, and the pixel electrode 13 in the same sub-pixel P is connected to the thin film transistor 14. The gate lines 4 extend along a row direction of the plurality of sub-pixels P arranged in an array, the data lines extend along a column direction of the plurality of sub-pixels P arranged in an array, and the gate lines 4 and the data lines 5 are disposed to intersect each other, and the intersecting regions define the sub-pixels P. Each gate line 4 is correspondingly connected with the thin film transistor 14 in one row of the sub-pixels P, and each data line 5 is correspondingly connected with the thin film transistor 14 in one column of the sub-pixels P. Each gate line 4 is connected to the pixel electrode 13 through a thin film transistor 14 in a row of sub-pixels P connected thereto, the thin film transistor 14 serves as a switching device which is turned on or off in response to a scan signal transmitted from the gate line 4, and if the thin film transistor 14 in one sub-pixel P is turned on, a data voltage on a data line 5 connected to the thin film transistor 14 can be written to the pixel electrode 13 connected to the thin film transistor 14. The common electrode layer 12 is disposed on the first substrate 11, the plurality of pixel electrodes 13 are disposed on a side of the common electrode layer 12 away from the first substrate 11, and each sub-pixel P has one pixel electrode 13 therein, if a data voltage is written into the pixel electrode 13, the common voltage is input into the common electrode layer 12, the light of the backlight module transmits the liquid crystal layer 3, and the electric field between the common electrode layer 12 and the pixel electrode 13 can control the deflection direction of the liquid crystal molecules 31 in the liquid crystal layer 3, so as to control the light transmittance of the liquid crystal layer 3.

Further, referring to fig. 1-2 and 4, the color film substrate 2 may include a second substrate 21, a color filter 23, a black matrix 24, and a plurality of interference electrodes 22. The color filter 23 includes filters of multiple colors, for example, may include filters of three colors of red, green and blue, and accordingly, the light of the backlight module is filtered into light of red, green and blue after passing through the filters, and of course, the color filter may also include filters of more colors, which is not limited herein. The color filters 23 are disposed in the sub-pixels P, and the black matrix 24 is distributed between each of the plurality of sub-pixels P to separate adjacent sub-pixels P, thereby preventing crosstalk of light in the adjacent sub-pixels P. A plurality of interference electrodes 22 are disposed on a side of the second substrate 21 near the array substrate 1, specifically, one interference electrode 22 is disposed for each sub-pixel P, and the interference electrodes 22 may be disposed on a side of the color filter 23 near the array substrate 1. The front projection of the interference electrode 22 of each sub-pixel P on the first substrate 11 is at least partially overlapped with the front projection of the pixel electrode 13 of the sub-pixel P on the first substrate 11, the overlapped portion is called an overlapped region Q1, the common electrode 12 is disposed on one side of the sub-pixel electrode 131 close to the first substrate 11, the electric field formed between the common electrode 12 and the pixel electrode 13 can control the deflection direction of the liquid crystal molecules 31 in the liquid crystal layer 3, thereby controlling the transmittance of the liquid crystal layer 3 to normally display a picture, and the electric field between the interference electrode 22 and the pixel electrode 13 in the overlapped region Q1 can control the deflection direction of the liquid crystal molecules 31 of the liquid crystal layer 3 in the overlapped region Q1, so that the long axis direction of the liquid crystal molecules 31 of the liquid crystal layer 3 in the overlapped region Q1 is substantially perpendicular (including perpendicular or approximately perpendicular) to the first substrate 11, thereby reducing the transmittance of the liquid crystal layer 3 in the portion of the overlapped region Q1, thereby greatly reducing the transmittance of the display when the display is observed by a side view angle, resulting in reduced contrast, and thus preventing the picture from being seen by the display device.

Specifically, referring to fig. 4, the electric field between the interference electrode 22 and the pixel electrode 13 can adjust the deflection direction of the liquid crystal molecules 31 in the range of the overlapping area Q1 of the interference electrode 22 and the pixel electrode 13, so that the long axis of the liquid crystal molecules 31 is approximately perpendicular to the first substrate 11, and the electric field between the interference electrode 22 and the pixel electrode 13 can adjust the light transmittance of the liquid crystal layer 3 in the part of the overlapping area Q1, so that when the display device displays, the light of the backlight module transmits the liquid crystal layer 3, the liquid crystal molecules 31 in the part of the liquid crystal layer 3 outside the overlapping area Q1 deflect according to the electric field between the pixel electrode 13 and the common electrode 12 to achieve a normal display effect, and the liquid crystal molecules 31 in the part of the liquid crystal layer 3 in the overlapping area Q1 deflect according to the electric field between the interference electrode 22 and the pixel electrode 13 to be approximately perpendicular to the first substrate 11, so that the light transmittance is reduced, and the liquid crystal molecules 31 in the part of the liquid crystal layer 3 in the overlapping area Q1 form a low-level arrangement in the direction perpendicular to the first substrate 11, so that when the display device displays in the direction on the display device, the light-transmitting liquid crystal layer 3 passes through the liquid crystal layer 31 in the overlapping area Q1, the light transmittance is prevented from passing through the liquid crystal layer 31 in the viewing area, and the normal arrangement, and the light-transmitting effect is prevented from passing through the liquid crystal layer 1. In addition, since the interference electrode 22 is disposed on the side of the second substrate 21 close to the array substrate 1, that is, on the inner side of the color film substrate 2, the thickness of the color film substrate 2 is not increased additionally, so that the thickness of the display device is prevented from being increased.

Further, referring to fig. 3, fig. 3 is a cross-sectional view taken along the direction C-D of fig. 1, it should be noted that the cross-sectional view does not pass through the pixel electrode 13 in fig. 3, but the pixel electrode 13 is shown in fig. 3 in order to show the position of the pixel electrode 13 in the cross-sectional view. The display device provided in this embodiment is provided with a buffer layer 01 on a side of the first substrate 11 near the pixel electrode 13, and the thin film transistor 14 is located on a side of the buffer layer 01 near the pixel electrode 13. The thin film transistor 14 may include a plurality of film layers, for example, a Gate Electrode (Gate Electrode) 141, the Gate Electrode 141 is disposed on a side of the buffer layer 01 facing away from the first substrate 11, an Active layer (Active area) 142 is disposed over the Gate Electrode 141, a Gate insulating layer 02 is disposed between the Active layer 142 and the Gate Electrode 1411, a Drain Electrode (Drain Electrode) 143 and a Source Electrode (Source Electrode) 144 are disposed on a side of the Active layer 142 facing away from the Gate insulating layer 02, the Drain Electrode 143 and the Source Electrode 144 are disposed on the same layer, and an interlayer insulating layer 03 is disposed between the Drain Electrode 143 and the Active layer 142. The active layer 142 is made of a semiconductor material, and may be, for example, amorphous silicon, polycrystalline silicon, an organic semiconductor material, or the like, and is not limited thereto.

Further, referring to fig. 1 and 3, the pixel electrode 13 is connected over the drain electrode 143 of the thin film transistor 14 through a first via hole 001 provided in the interlayer insulating layer 03, the data line 5 is connected over the source electrode 141 of the thin film transistor 14 through a second via hole 002 provided between the interlayer insulating layers 03, and the gate line 4 (not shown in fig. 3) is connected to the gate electrode 61 of the thin film transistor 13 and is disposed in the same layer as the gate electrode 61. The common electrode 12 may be disposed in the same layer as the active layer 142. It should be noted that, in the display device provided in this embodiment, the data line 5 and the gate line 4 may be disposed between any two film layers in the array substrate, which is not limited herein.

Alternatively, the source electrode 144 and the drain electrode 143 of the thin film transistor 14 may include any of various metal materials, such as silver (Ag), copper (Cu), and aluminum (Al). The material of the pixel electrode 13 may include various types of transparent semiconductor materials, and may be, for example, indium Tin Oxide (ITO). Of course, the materials of the source electrode 144 and the drain electrode 143 and the pixel electrode 13 may be other materials, which are not limited herein.

It should be noted that, in the display device provided in this embodiment, the structure of the thin film transistor 14 may include various types, and the example is illustrated in the drawings for convenience of description, and the embodiment is not limited thereto.

Further, in the display device provided in this embodiment, referring to fig. 2 and fig. 3 to fig. 9, taking an example in which the common electrode 12 and the pixel electrode 13 are disposed in different layers as an example, the common electrode 12 in each sub-pixel P may be a plate-shaped electrode, the pixel electrode 13 may be a slit electrode, and the common electrode 12 and the pixel electrode 13 are sequentially disposed in a direction away from the first substrate 11, that is, the common electrode 12 is disposed on a side of the pixel electrode 13 away from the liquid crystal layer 3. The slit electrode (i.e., the pixel electrode 13) includes a main body portion and an opening portion 013, the opening portion 013 is a slit of the slit electrode, the main body portion is a portion of the slit electrode which is not hollowed out, and an electric field of the common electrode 12 which is a plate electrode acts with an electric field of the main body portion through the opening portion 013 to adjust a deflection direction of the liquid crystal molecules 31 of a portion of the liquid crystal layer 3 corresponding to the sub-pixel P, so as to perform display. The front projection of the interference electrode 22 in each sub-pixel P on the first substrate 11 at least partially overlaps with the front projection of the main body portion of the slit electrode (i.e., the pixel electrode 13) of the sub-pixel P on the first substrate 11, the overlapping portion is referred to as an overlapping region Q1, and the front projection of the interference electrode 22 on the first substrate 11 does not overlap with the front projection of the opening 013 of the slit electrode on the first substrate 11. The liquid crystal molecules 31 of the liquid crystal layer 3 at the portion of the overlapping region Q1 are deflected to be approximately perpendicular to the electric field between the interference electrode 22 and the pixel electrode 13, so that the light transmittance is reduced, the liquid crystal molecules 31 of the liquid crystal layer 3 at the portion of the overlapping region Q1 are aligned with low light transmittance in the direction perpendicular to the first substrate 11, so that if the display device is observed from the direction of the side viewing angle with the display surface of the display device, the line of sight passes through the liquid crystal molecules 31 in the overlapping region Q1, and the alignment with low light transmittance formed by the liquid crystal molecules 31 in the overlapping region Q1 effectively blocks the line of sight, thereby achieving the peep-proof effect, and the orthographic projection of the interference electrode 22 on the first substrate 11 and the orthographic projection of the opening 013 of the slit electrode (i.e., the pixel electrode 13) on the first substrate 11 are not overlapped, so that the electric field of the interference electrode 22 does not affect the electric field between the common electrode 12 and the slit electrode (i.e., the pixel electrode 13), i.e., the display effect of the display device is observed at the front viewing angle.

Further, referring to fig. 1, if the pixel electrode 13 is a slit electrode, the pixel electrode 13, which is a slit electrode, may include a main body portion and an opening portion 013, and the main body portion of each slit electrode may include a plurality of sub-main body portions 131, first connection portions 132, and second connection portions 133. The plurality of sub-body parts 131 are disposed at intervals, the interval between two adjacent sub-body parts 131 defines an opening 013, the plurality of sub-body parts 131 may extend in the same direction, the first connection part 132 and the second connection part 133 may extend in another direction, the extending direction of the plurality of sub-body parts 131 may be connected through the first connection part 132 as compared with the extending direction of the first connection part 132 (and the second connection part 133), the other ends of the plurality of sub-body parts 131 may be connected through the second connection part 133, and the gate line 4 and the data line 5 may overlap at any one of the first connection part 132 and the second connection part 133 to transmit the pixel voltage to the body part of the pixel electrode 13.

In the display device provided by the embodiments of the present disclosure, the arrangement manner of the pixel electrode 13 and the interference electrode 22, which are slit electrodes, may include various embodiments, the larger the area ratio of the interference electrode 22 in the region of the sub-pixel P is, the better the peep preventing effect is, but the contrast may be reduced, and the interference electrode 22 and the pixel electrode 13 may be set according to the contrast and the peep preventing requirement of the display device. The following is an example.

Example 1

Referring to fig. 2 and 5, in the display device provided in the embodiment of the disclosure, each pixel electrode 13 on the array substrate 1 is a slit electrode, and includes a main body portion and an opening portion 013, the main body portion includes a plurality of sub-main body portions 131, the plurality of sub-main body portions 131 are arranged at intervals, the opening portion 013 is defined between two adjacent sub-main body portions 131, first ends of the plurality of sub-main body portions 131 are connected through a first connection portion 132, and second ends of the plurality of sub-main body portions 131 are connected through a second connection portion 132.

Further, each of the interference electrodes 22 on the color film substrate 2 may include a plurality of sub-interference electrodes 221, that is, a plurality of sub-main body portions 131 and a plurality of sub-interference electrodes 221 are included in one sub-pixel P.

One sub-interference electrode 221 is disposed corresponding to one sub-body 131, and one sub-interference electrode 221 corresponds to one sub-body 131, that is, the front projection of the sub-interference electrode 221 on the first substrate 11 has an overlapping area with the front projection of the sub-body 131 on the first substrate 11. In addition, the sub-interference electrodes 221 are disposed on the side of the second substrate 21 close to the array substrate 1 with a gap between one sub-main body 131 and another sub-main body 131, that is, between the front projections of any two sub-interference electrodes 221 on the first substrate 11, among the plurality of sub-interference electrodes 221 in each sub-pixel P, one sub-main body 131 is disposed, and the front projections of two adjacent sub-interference electrodes 221 on the first substrate 11 and the front projections of the sub-main body 131 on the two sides of the middle sub-main body respectively have overlapping areas, the liquid crystal molecules 31 of the liquid crystal layer 3 in the overlapping areas deflect to be approximately vertical according to the electric field between the sub-interference electrodes 221 and the sub-main body 131 below the sub-interference electrodes 221, so that the light transmittance is reduced, the peep-proof effect is achieved, and the thickness of the color film substrate 2 is not increased additionally because the sub-interference electrodes 221 are disposed on the side of the second substrate 21 close to the array substrate 1, so that the thickness of the display device is prevented from being increased.

Example 2

Referring to fig. 6, in the display device provided by the embodiment of the disclosure, each pixel electrode 13 on the array substrate 1 is a slit electrode, and includes a main body portion and an opening portion 013, the main body portion includes a plurality of sub-main body portions 131, the plurality of sub-main body portions 131 are arranged at intervals, the opening portion 013 is defined between two adjacent sub-main body portions 131, first ends of the plurality of sub-main body portions 131 are connected through a first connection portion 132, and second ends of the plurality of sub-main body portions 131 are connected through a second connection portion 132.

The sub-interference electrodes 221 are disposed in one-to-one correspondence with the sub-main body portions 131, that is, the front projection of each sub-interference electrode 221 on the first substrate 11 has an overlapping area with the front projection of one sub-main body portion 131 on the first substrate 11, the number of sub-interference electrodes 221 in each sub-pixel P is the same as the number of sub-main body portions 131, that is, the interference electrodes 221 are disposed above each sub-main body portion 131, so that the liquid crystal molecules 31 between each sub-main body portion 131 and the interference electrode 221 corresponding to the sub-main body portion 131 deflect to a state approximately perpendicular to the electric field between the sub-interference electrode 221 and the sub-main body portion 131, thereby reducing the light transmittance and achieving the anti-peeping effect, and the thickness of the color film substrate 2 is not increased additionally because the sub-interference electrodes 221 are disposed on the side of the second substrate 21 close to the array substrate 1, thereby avoiding increasing the thickness of the display device.

Example 3

Referring to fig. 7, in the display device provided in the embodiment of the disclosure, each pixel electrode 13 on the array substrate 1 is a slit electrode, and includes a main body portion and an opening portion 013, the main body portion includes a plurality of sub-main body portions 131, the plurality of sub-main body portions 131 are arranged at intervals, the opening portion 013 is defined between two adjacent sub-main body portions 131, first ends of the plurality of sub-main body portions 131 are connected through a first connection portion 132, and second ends of the plurality of sub-main body portions 131 are connected through a second connection portion 132.

Further, each of the interference electrodes 22 on the color film substrate 2 includes only one sub-interference electrode 221, that is, one sub-pixel P has a plurality of sub-main portions 131 therein, and only one sub-interference electrode 221 is disposed. The sub-interference electrode 221 may be disposed above any one of the sub-main body portions 131 of the pixel electrode 13, for example, the sub-interference electrode 221 may be disposed corresponding to the sub-main body portion 131 located in the middle of the sub-main body portions 131. Taking the example that each pixel electrode 13 on the array substrate 1 includes three sub-main body portions 131, the three sub-main body portions 131 are sequentially and alternately arranged, the three sub-main body portions 131 are respectively a first sub-main body portion, a second sub-main body portion and a third sub-main body portion, the second sub-main body portion is located between the first sub-main body portion and the third sub-main body portion, then the second sub-main body portion is a sub-main body portion located in the middle, and the sub-interference electrode 221 may be opposite to the second sub-main body portion, that is, the front projection of the second sub-main body portion on the first substrate 11 and the front projection of the sub-interference electrode 221 on the first substrate 11 have overlapping areas, and the front projection of the first sub-main body portion on the first substrate 11 and the front projection of the second sub-main body portion on the first substrate 11 do not overlap areas with the front projection of the sub-interference electrode 221 on the first substrate 11. The liquid crystal molecules 31 of the liquid crystal layer 3 between the second sub-body and the sub-interference electrode 221 deflect to be approximately vertical according to the electric field between the second sub-body and the sub-interference electrode 221, so that the light transmittance is reduced, the peep-proof effect is achieved, and the thickness of the color film substrate 2 is not increased additionally because the sub-interference electrode 221 is arranged on the side of the second substrate 21 close to the array substrate 1, so that the thickness of the display device is prevented from being increased.

It should be noted that the above embodiments are merely exemplary display devices, and the interference electrode 22 and the pixel electrode 13 in the display device provided in the embodiments of the present disclosure may also include other arrangements, which are not limited herein.

In some examples, the front projection of the sub-interference electrode 221 on the first substrate 11 and the front projection of the sub-body portion 131 corresponding to the sub-interference electrode 221 on the first substrate 11 are completely coincident.

In some examples, referring to fig. 1 to fig. 9, in the display device provided in the embodiments of the present disclosure, the area of the disturbing electrode 22 may be equal to or slightly larger than the area of the pixel electrode 13, that is, the front projection of the pixel electrode 13 on the first substrate 11, and is located in the front projection of the disturbing electrode 22 disposed opposite to the pixel electrode 13 on the first substrate 11, if the pixel electrode 13 includes a plurality of sub-main body portions 131 and the disturbing electrode 22 includes a plurality of sub-disturbing electrodes 221, the front projection of the sub-main body portions 131 on the first substrate 11 and the front projection of the sub-disturbing electrodes 221 corresponding to the sub-main body portions 131 on the first substrate 11 are located, so that the overlapping area of the sub-main body portions 131 and the sub-disturbing electrodes 221 can be ensured to be sufficiently large, and further, the liquid crystal molecules 31 between the sub-main body portions 131 and the sub-disturbing electrodes 221 can be effectively controlled to deflect.

In some examples, as shown in fig. 1, the pixel electrode 13 may include a plurality of sub-body portions 131, the interference electrode 22 may include a plurality of sub-interference electrodes 221, the shape of the sub-body portion 131 may include various forms, such as a stripe electrode, a plate electrode, a comb electrode, etc., the shape of the sub-interference electrode 221 may also include various forms, such as a stripe electrode, a plate electrode, a comb electrode, etc., the shape and the extension direction of the sub-body portion 131 may be the same as those of the sub-body portion 131, and here, the sub-interference electrode 221 may be a stripe electrode, that is, the extension direction of the sub-body portion 131 may be the same as that of the sub-interference electrode 221, for example, as shown in fig. 1, the sub-body portion 131 extends in the column direction, and the sub-interference electrode 221 also extends in the column direction.

In some examples, referring to fig. 8-9, the display device provided in the embodiments of the present disclosure may further include at least one supporting structure 25, and the plurality of disturbing electrodes 22 include only one sub-disturbing electrode 221, and then the sub-disturbing electrode 221 is disposed corresponding to one supporting structure 25, that is, an orthographic projection of the sub-disturbing electrode 221 on the second substrate 21 coincides with an orthographic projection of the supporting structure 25 corresponding to the sub-disturbing electrode 221 on the second substrate 21; if the interference electrode 22 includes a plurality of sub-interference electrodes 221, the supporting structures 25 are disposed in a one-to-one correspondence with the sub-interference electrodes 221, that is, the orthographic projection of each sub-interference electrode 221 on the second substrate 21 coincides with the orthographic projection of the supporting structure 25 corresponding to the sub-interference electrode 22 on the second substrate 21, and the number of sub-interference electrodes 221 of each sub-pixel P is the same as the number of supporting structures 25. The support structure 25 is disposed between the second substrate 21 and the sub-interference electrode 221, and since the sub-interference electrode 221 is disposed in the sub-pixel P in which the color filter 23 is disposed, the support structure 25 is disposed between the color filter 23 and the sub-interference electrode 221, and the support structure 23 is capable of supporting the driver interference electrode 221, increasing the height of the sub-interference electrode 221, reducing the distance between the sub-interference electrode 221 and the sub-body portion 131 of the pixel electrode 13, thereby enhancing the electric field between the sub-interference electrode 221 and the sub-body portion 131, and enhancing the control accuracy of the liquid crystal molecules 31.

In some examples, referring to fig. 8, the arrangement manner of the supporting structure 25 may include various manners, and the material of the supporting structure 25 may be various materials, for example, the supporting structure 25 may be integrally formed with the sub-interference electrode 221, that is, the thickness of the film of the interference electrode 22 (the sub-interference electrode 221) is increased when the interference electrode 22 (the sub-interference electrode 221) is manufactured, so that the distance between the interference electrode 22 (the sub-interference electrode 221) and the pixel electrode 13 (the sub-main body 131) is reduced.

In some examples, the interference electrode 22 may be made of a variety of materials, such as ITO, and thus the support structure 25 may also be made of ITO.

In some examples, referring to fig. 9, the supporting structure 25 may be disposed in other manners, for example, the supporting structure 25 may be integrally formed with the black matrix 24 disposed between the plurality of sub-pixels P, that is, the film thickness of the black matrix 24 is increased when the black matrix 24 is fabricated, then the black matrix 24 is patterned, so that the plurality of supporting structures 25 are formed in the sub-pixels P by the black matrix 24, and then the interference electrode 221 is disposed on the supporting structure 25, so that the distance between the interference electrode 22 (the sub-interference electrode 221) and the pixel electrode 13 (the sub-main body 131) is reduced.

In some examples, the width D2 of the support structure 25 may be smaller than the width D2 of the black matrix 24, that is, the support structure 25 may be narrower than the black matrix 24 located at the periphery of the sub-pixels P, thereby reducing the influence of the support structure 25 on the transmittance of the sub-pixels P, so that the support structure 25 does not influence the light extraction of the sub-pixels P as much as possible.

In some examples, the common electrode 12 may be disposed and shaped in various manners, for example, the common electrode 12 may be a plurality of plate electrodes, each of the sub-pixels P is disposed as a plate electrode, each of the plate electrodes is in orthographic projection on the first substrate 11, the orthographic projection of the pixel electrode 13 in the sub-pixel P on the first substrate 11 is covered, the plate electrodes (i.e., the common electrode 12) of the plurality of sub-pixels P are connected through a common electrode line, the common electrode line transmits the common voltage Vcom to the plurality of common electrodes 12 as plate electrodes, so that the plurality of common electrodes 12 are in common potential, or the common electrode 12 may be a plurality of strip electrodes, which are disposed in the same layer as and are staggered with the plurality of sub-pixel electrodes 131 as strip electrodes, the strip electrodes (i.e., the common electrode 12) of the plurality of sub-pixels P are connected through a common electrode line, the common electrode line transmits the common voltage Vcom to the plurality of common electrodes 12 as strip electrodes, so that the common electrode 12 is in common potential, or the common electrode 12 may be a plane electrode, and the common electrode 12 is projected on the first substrate 11 on the front surface of the first substrate 11, and the common electrode 12 is in overlapping plane with the common electrode 12. The specific configuration may be set as needed, and is not limited herein.

In some examples, the common electrode 12 may include a variety of materials, such as ITO, although other materials may be used without limitation.

In some examples, referring to fig. 10, in the display device provided in the embodiment of the present disclosure, the first electrode is taken as the common electrode 12, the second electrode is taken as the pixel electrode 13, and the common electrode 12 and the pixel electrode 13 may be disposed in the same layer. Specifically, each sub-pixel P includes one common electrode 12 and one pixel electrode 13, the common electrode 12 may include a plurality of sub-common electrodes 121, the plurality of sub-common electrodes 121 may be stripe electrodes, the pixel electrode 13 may include a plurality of sub-pixel electrodes 131 ', the plurality of sub-pixel electrodes 131' may also be stripe electrodes, the plurality of sub-common electrodes 121 and the plurality of sub-pixel electrodes 131 'may extend in the same direction, and the sub-common electrodes 121 and the sub-pixel electrodes 131' are staggered and disposed at intervals on the side of the first substrate 11 close to the liquid crystal layer 3, i.e., one sub-common electrode 121 is adjacent to one sub-pixel electrode 131 ', and the common electrode 121 and the sub-pixel electrode 131' are disposed in the same layer. In the above embodiment, the orthographic projection of the interference electrode 22 on the color film substrate 2 on the first substrate 11 may at least partially overlap with the orthographic projection of the sub-common electrode 121 and/or the sub-pixel electrode 131 'on the first substrate 11 in the arrangement of the sub-common electrodes 121-sub-pixel electrodes 131' -sub-common electrodes 121 that are staggered.

Further, in the same manner as in the above embodiments 1 to 3, in the embodiment in which the common electrode 12 and the pixel electrode 13 are provided in the same layer, the arrangement manner of the interference electrode 22 and the common electrode 12 and the pixel electrode 13 may also include plural kinds. For example, the interference electrode 22 may include a plurality of sub-interference electrodes 221, and the sub-interference electrodes 221 are disposed at intervals of one sub-common electrode 121 or sub-pixel electrode 131' within each sub-pixel P. Alternatively, the sub-interference electrodes 221 are disposed in one-to-one correspondence with the sub-common electrodes 121 and in one-to-one correspondence with the sub-pixel electrodes 131 ', that is, the front projection of each sub-common electrode 121 on the first substrate 11 has an overlapping area with the front projection of one sub-interference electrode 221 on the first substrate 11, and the front projection of each sub-pixel electrode 131' on the first substrate 11 has an overlapping area with the front projection of one sub-interference electrode 221 on the first substrate 11. Alternatively, the interference electrode 22 of each sub-pixel P may have only one sub-interference electrode 221, and the sub-interference electrode 221 may be disposed corresponding to the sub-common electrode 121 or the sub-pixel electrode 131 ' disposed in the middle of the sub-common electrode 121 or the sub-pixel electrode 131 ' disposed on the array substrate 1, that is, the front projection of the sub-interference electrode 221 on the first substrate 11 and the front projection of the sub-common electrode 121 or the sub-pixel electrode 131 ' disposed in the middle on the first substrate 11 may have an overlapping region. Of course, the arrangement of the interference electrode 22, the common electrode 12, and the pixel electrode 13 may be variously provided, and is not limited thereto.

Referring to fig. 11, fig. 11 is a voltage-transmittance graph of two embodiments and one exemplary embodiment of a display device according to an embodiment of the present disclosure, where (1) is an embodiment corresponding to fig. 7, (2) is an embodiment corresponding to fig. 2, and (3) is an embodiment in which the interference electrode 22 is a surface electrode, and covers the entire second substrate 21. Referring to fig. 12, fig. 12 is a view angle-contrast graph of two embodiments and two exemplary embodiments of a display device according to an embodiment of the present disclosure, where (1) is an embodiment corresponding to fig. 7, (2) is an embodiment corresponding to fig. 2, (3) is an embodiment in which an interference electrode 22 is a surface electrode, and covers the entire second substrate 21, and (4) is an embodiment of a display device in which no interference electrode 22 is disposed. Referring to fig. 13, fig. 13 is a parameter table of simulation tests using the embodiments (1), (2), and (3) as models, and referring to fig. 11-13, it can be seen that the display device (using (1) and (2) as examples) provided in the embodiment of the disclosure has high contrast ratio and high light transmittance under a front view angle, and can perform good display, and has low contrast ratio and low light transmittance under a side view angle (using 45 ° side view angle as examples), so that good peep preventing effect can be achieved without affecting normal display. The driving voltage of the display device in fig. 13 is only an exemplary driving voltage, and the display device may operate at a voltage not less than the driving voltage.

Correspondingly, the embodiment of the disclosure further provides a manufacturing method of the display device, taking the display device shown in fig. 2 as an example, the method may include the following steps:

s1, manufacturing the array substrate 1.

Specifically, each film layer of the thin film transistor 14 may be formed on the first substrate 11, specifically including sequentially preparing a buffer layer 01, a gate electrode 141, an active layer 142, a gate insulating layer 02, a drain electrode 143, a source electrode 144, an interlayer insulating layer 03, and a data line 5 on the first substrate 11, where, when the film layer of the active layer 142 is formed, forming a common electrode 12 on the film layer of the active layer 142; in the case of forming the film of the data line 5, the pixel electrode 131 is formed on the film of the data line 5.

S2, manufacturing the color film substrate 2.

Alternatively, the black matrix 24 may be formed on the second substrate 21 by exposing, developing, and etching the material to form the black matrix 24; fabricating color filters 23 including red (R), blue (B) and green (G) filters in regions between the black matrices 24; an optical paste (not shown) is coated on the side of the color filter 23 facing away from the second substrate 21 to protect the color filter 23 and form a planarization layer; and a film layer of the interference electrode 22 is manufactured on the side, away from the second substrate 21, of the light glue, and then the pattern of the interference electrode 22 (comprising a plurality of sub-interference electrodes 221) is formed by exposing, developing and etching according to the pattern of the interference electrode 22. A frame sealing glue (not shown in the figure) is coated on the peripheral area of the color film substrate 2, and a crystal filling port flows out of the frame sealing glue.

Further, S2 may further include forming a plurality of spacers (not shown) on the side of the black matrix 24 near the liquid crystal layer 3, so as to support the space between the array substrate 1 and the color film substrate 2 after the array substrate 1 is paired with the next space.

S3, packaging the array substrate 1 and the color film substrate 2 in a box-to-box manner, and filling liquid crystal between the array substrate and the color film substrate.

And (3) aligning the array substrate 1 manufactured in the step (1) with the color film substrate 2 manufactured in the step (2), packaging the array substrate 1 and the color film substrate 2 by using frame sealing glue, filling liquid crystal molecules 31 into a crystal filling opening to form a liquid crystal layer 3, and sealing the crystal filling opening to form the display device.

It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.

Claims

1. A display device includes a plurality of sub-pixels arranged in an array; wherein the display device includes: an array substrate and a counter substrate disposed opposite to each other, and a liquid crystal layer disposed therebetween;

the counter substrate includes: a second substrate, and an interference electrode of each of the plurality of sub-pixels; the interference electrode is arranged on one side of the second substrate close to the liquid crystal layer, and the interference electrode of each sub-pixel at least partially overlaps with the orthographic projection of the second electrode of each sub-pixel on the first substrate;

the first electrode in the sub-pixel comprises a plurality of sub-first electrodes, and the second electrode comprises a plurality of sub-second electrodes; the sub first electrodes and the sub second electrodes are arranged in a staggered manner and are arranged on the same layer; wherein,

orthographic projection of the interference electrode in the sub-pixel on the first substrate is at least partially overlapped with orthographic projection of the sub-second electrode on the first substrate;

the interference electrode in each of the sub-pixels includes at least one sub-interference electrode;

the display device further comprises at least one supporting structure, wherein the supporting structures are arranged in one-to-one correspondence with the sub-interference electrodes, and the supporting structures are positioned between the sub-interference electrodes and the second substrate;

The opposite substrate further includes a black matrix disposed between each of the sub-pixels;

the support structure and the black matrix are integrally formed.

2. The display device according to claim 1, wherein the second electrode is a slit electrode; the slit electrode includes a main body portion and an opening portion; wherein,

3. The display device according to claim 2, wherein the main body portion in each of the sub-pixels includes a plurality of sub-main body portions, a first connection portion, and a second connection portion; the plurality of sub-main body parts are arranged at intervals, the first ends of the plurality of sub-main body parts are connected through the first connecting part, and the second ends of the plurality of sub-main body parts are connected through the second connecting part;

4. The display device according to claim 2, wherein the main body portion in each of the sub-pixels includes a plurality of sub-main body portions, a first connection portion, and a second connection portion; the plurality of sub-main body parts are arranged at intervals, the first ends of the plurality of sub-main body parts are connected through the first connecting part, and the second ends of the plurality of sub-main body parts are connected through the second connecting part;

5. The display device according to claim 2, wherein the main body portion in each of the sub-pixels includes a plurality of sub-main body portions, a first connection portion, and a second connection portion; the plurality of sub-main body parts are arranged at intervals, the first ends of the plurality of sub-main body parts are connected through the first connecting part, and the second ends of the plurality of sub-main body parts are connected through the second connecting part;

6. A display device according to any one of claims 3 to 5, wherein the orthographic projection of the sub-body portion onto the first substrate is located within the orthographic projection of the corresponding sub-interference electrode onto the first substrate.

7. The display device according to any one of claims 3 to 5, wherein the sub-main body portion is a stripe-shaped electrode; the sub-interference electrodes are strip-shaped electrodes, and the extending direction of the sub-main body part is the same as the extending direction of the sub-interference electrodes.